[Chris D] noticed that the excellent software defined radio (SDR) software gqrx will run on the Raspberry Pi now. So he married a Raspberry Pi 3, a touchscreen, an RTL-SDR dongle, and an upconverter ...

In my last column I described measurements I made on some indoor TV antennas. The “Spectrum Spy” software and Airspy SDR I used for those measurements can also be used as part of a very portable, ...

It may not be the radio station with all the hits and the best afternoon drive show, but 1420.4058 MHz is the most popular frequency in the universe. That’s the electromagnetic spectral line of ...